Al-Jahdali, M., Baker, P. K., Hursthouse, M. B. and Coles, S. J.
3-Hexyne complexes of molybdenum(II) and tungsten(II) containing 2,2' - bipyridine. X-ray crystal structure of MoI2(CO) (bipy) (?(2)-EtC2Et)
Zeitschrift Fur Naturforschung Section B - a Journal of Chemical Sciences, 55, (11), .
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Reaction of [MI2(Co)(NCMe)(?(2)-EtC2Et)(2)] (M = Mo,W) with one equivalent of 2,2'-bipyridine (bipy) in CH2Cl2 at room temperature gives either the neutral complex, [MoI2(CO)(bipy)-(?(2)-EtC2Et)] (1) or the cationic complex, [WI(CO) (bipy)(?(2)-EtC2Et)(2)]I (2). The neutral molybdenum complex 1, has been crystallographically characterised, and has a pseudo-octahedral geometry with the iodo-ligand trans to the 3-hexyne, and with the bipy, carbon monoxide and other iodo-ligand occupying the equatorial face. C-13 NMR studies show the 3-hexyne is donating four electrons to the molybdenum in 1.
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